In August of 1967 an American spy satellite took sensational photographs. A huge unknown machine of 100 meters long and about 500 tons of weight, which looked like an aircraft, was flying over the Caspian Sea waters with more than 500 kilometers of speed. Pentagon analysts called this object "the Caspian sea monster". It was constructed to make the Soviet Union a naval superpower. Find out about the history of the Caspian sea monster's construction, checkouts and its rebirth today.